Subject: RE: (urth) No Grand Gnab
Date: Fri, 14 Feb 2003 11:31:37 -0700
From: "Dan'l Danehy-Oakes"
> What confuses me about this article is that they seem (or=20
> claim) to know just how much dark matter there is in the
> universe - I'm not sure how they're coming up with those
> numbers.
Probably reverse-engineering ... with data like this, I=20
suppose they have enough information to work out the higher-
order differentials (i.e., the rate change of the rate of=20
change of ... ) of the expansion of the universe. Given
that, they could extrapolate _forward_ and determine
whether the slowing expansion will reverse into a collapse
or just continue to expand at a rate that asymptotically
approaches zero.
Or something.
Hey, I just live in the universe, I don't run it...
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